Pengfei Wang 0005 Boya Di Lingyang Song Unlicensed Spectrum Sharing with WiGig in Millimeter-wave Cellular Networks in 6G Era. 1-6 2020 GLOBECOM https://doi.org/10.1109/GLOBECOM42002.2020.9322110 conf/globecom/2020 db/conf/globecom/globecom2020.html#0005DS20